<?php

namespace Modules\Maintenance\Http\Controllers\Api\V1;

use App\Http\Controllers\Controller;
use Modules\Maintenance\Models\FailureReport;
use Modules\Maintenance\Services\MaintenanceActivityService;
use Modules\Maintenance\Traits\AppliesMaintenanceScope;
use Modules\Maintenance\Traits\ResolvesBusiness;
use Illuminate\Http\Request;

class FailureReportController extends Controller
{
    use ResolvesBusiness, AppliesMaintenanceScope;

    public function index(Request $request)
    {
        $business = $this->resolveBusiness($request);
        if (! $business) {
            return $this->jsonError('کسب‌وکار یافت نشد.', 404);
        }

        $query = FailureReport::where('business_id', $business->id)
            ->with(['equipment:id,name,code', 'project:id,name', 'productionLine:id,name,code', 'reporter:id,name'])
            ->orderByDesc('reported_at');

        $this->applyMaintenanceScopeFilters($query, $request);

        if ($equipmentId = $request->get('equipment_id')) {
            $query->where('equipment_id', $equipmentId);
        }

        $paginator = $query->paginate((int) $request->get('per_page', 15));

        return $this->jsonSuccess([
            'items' => $paginator->items(),
            'pagination' => [
                'total' => $paginator->total(),
                'per_page' => $paginator->perPage(),
                'current_page' => $paginator->currentPage(),
                'last_page' => $paginator->lastPage(),
            ],
        ]);
    }

    public function store(Request $request)
    {
        $business = $this->resolveBusiness($request);
        if (! $business) {
            return $this->jsonError('کسب‌وکار یافت نشد.', 404);
        }

        $data = $request->validate(array_merge([
            'work_order_id' => ['nullable', 'exists:maintenance_work_orders,id'],
            'failure_type' => ['nullable', 'string'],
            'root_cause' => ['nullable', 'string'],
            'corrective_action' => ['nullable', 'string'],
            'preventive_action' => ['nullable', 'string'],
            'downtime_hours' => ['sometimes', 'numeric', 'min:0'],
            'repair_hours' => ['sometimes', 'numeric', 'min:0'],
            'lost_production' => ['nullable', 'numeric'],
            'cost' => ['sometimes', 'integer', 'min:0'],
        ], $this->equipmentIdsValidationRules(), $this->scopeValidationRules()));

        $equipmentIds = $this->resolveEquipmentIds($data);
        if (empty($equipmentIds)) {
            return $this->jsonError('حداقل یک تجهیز انتخاب کنید.', 422);
        }

        unset($data['equipment_id'], $data['equipment_ids']);

        try {
            $data = $this->syncScopeFromLine($data);
        } catch (\InvalidArgumentException $e) {
            return $this->jsonError($e->getMessage(), 422);
        }

        $created = [];
        foreach ($equipmentIds as $equipmentId) {
            $report = FailureReport::create(array_merge($data, [
                'business_id' => $business->id,
                'equipment_id' => $equipmentId,
                'reported_by' => $request->user()?->id,
                'reported_at' => now(),
            ]));

            MaintenanceActivityService::logEquipmentHistory(
                $business, $report->equipment_id, 'repair',
                'گزارش خرابی', $report->failure_type, $request->user(),
                (int) ($report->cost ?? 0), FailureReport::class, $report->id
            );

            $created[] = $report->load('equipment');
        }

        $message = count($created) > 1
            ? count($created).' گزارش خرابی برای تجهیزات انتخاب‌شده ثبت شد.'
            : 'گزارش خرابی ثبت شد.';

        return $this->jsonSuccess(
            count($created) === 1 ? $created[0] : ['items' => $created, 'count' => count($created)],
            $message,
            201
        );
    }

    public function update(Request $request, FailureReport $failureReport)
    {
        if (! $this->ensureBusinessOwnership($request, $failureReport->business_id)) {
            return $this->jsonError('دسترسی ندارید.', 403);
        }

        $data = $request->validate(array_merge([
            'failure_type' => ['nullable', 'string'],
            'root_cause' => ['nullable', 'string'],
            'corrective_action' => ['nullable', 'string'],
            'preventive_action' => ['nullable', 'string'],
            'downtime_hours' => ['sometimes', 'numeric', 'min:0'],
            'repair_hours' => ['sometimes', 'numeric', 'min:0'],
            'lost_production' => ['nullable', 'numeric'],
            'cost' => ['sometimes', 'integer', 'min:0'],
        ], $this->scopeValidationRules()));

        try {
            $data = $this->syncScopeFromLine(array_merge([
                'project_id' => $failureReport->project_id,
                'production_line_id' => $failureReport->production_line_id,
            ], $data));
        } catch (\InvalidArgumentException $e) {
            return $this->jsonError($e->getMessage(), 422);
        }

        $failureReport->update($data);

        return $this->jsonSuccess($failureReport, 'گزارش به‌روزرسانی شد.');
    }

    public function destroy(Request $request, FailureReport $failureReport)
    {
        if (! $this->ensureBusinessOwnership($request, $failureReport->business_id)) {
            return $this->jsonError('دسترسی ندارید.', 403);
        }

        $failureReport->delete();

        return $this->jsonSuccess(null, 'گزارش حذف شد.');
    }
}